Find and correct the mistakes in the sentences. There is one mistake in each sentence. 1 The students haven’t seen all morning. I’ve no idea where they are. 2 The exams were corrected for our teacher. I think they took her a lo...

Find and correct the mistakes in the sentences. There is one mistake in each sentence. 1 The students haven’t seen all morning. I’ve no idea where they are. 2 The exams were corrected for our teacher. I think they took her a long time! 3 The classroom is been painted at the moment, so we have to work in the main hall. 4 The question can’t have answered. It’s much too difficult! 5 The 3D film was been seen by thousands of people on its opening night.